I will never eat free nuts from the bowl on the bar again, having seen "Along Came Polly." Not after hearing the expert risk-assessor Reuben Feffer (Ben Stiller) explain who has already handled them, what adventures they have had, and, for all we know, where they might have been. It's his job to know the risks of every situation, which is why his marriage seems like such a sure thing: His new bride Lisa (Debra Messing) is like a computer print-out of an ideal mate for life.